First off, What is caffeine?
Caffeine (sometimes called guaranine when found in guarana, mateine when found in mate, and theine when found in tea) is a xanthine alkaloid found in the leaves and beans of the coffee plant, in tea, yerba mate, guarana berries, and in small quantities in cocoa, the kola nut and the Yaupon holly. Overall, caffeine is found in the beans, leaves, and fruit of over 60 plants[1], where it acts as a natural pesticide that paralyzes and kills many insects feeding upon them.
Caffeine is a central nervous system and metabolic stimulant, and is used both recreationally and medically to reduce physical fatigue and restore mental alertness when unusual weakness or drowsiness occurs. Caffeine stimulates the central nervous system first at the higher levels, resulting in increased alertness and wakefulness, faster and clearer flow of thought, increased focus, and better general body coordination [11]. The precise amount of caffeine necessary to produce effects varies from person to person depending on body size and degree of tolerance to caffeine. Consumption of caffeine does not eliminate the need for sleep: it only temporarily reduces the sensation of being tired.
In nature, caffeine is found with widely varying concentrations of the other xanthine alkaloids theophylline and theobromine, which are cardiac stimulants.
Caffeine is sometimes administered in combination with medicines to increase their effectiveness, While relatively safe for humans, caffeine is considerably more toxic to some other animals such as dogs, horses and parrots due to a much poorer ability to metabolize this compound.
The 4 caffeine-induced psychiatric disorders include caffeine intoxication, caffeine-induced anxiety disorder, caffeine-induced sleep disorder, and caffeine-related disorder not otherwise specified (NOS)." A high intake of caffeine, especially over long periods of time, can lead to nervousness, irritability, anxiety, tremulousness, muscle twitching, insomnia, heart palpitations and hyperreflexia. Furthermore, because caffeine increases the production of stomach acid, high usage over time can lead to peptic ulcers, erosive esophagitis, and gastroesophageal reflux disease. An acute overdose of caffeine, usually in excess of 250 mg (more than 2-3 cups of brewed coffee), can result in a state of central nervous system overstimulation called caffeine intoxication. The symptoms of caffeine intoxication may include restlessness, nervousness, excitement, insomnia, flushing of the face, increased urination, gastrointestinal disturbance, muscle twitching, a rambling flow of thought and speech, irregular or rapid heart beat, and psychomotor agitation. In cases of much larger overdoses mania, depression, lapses in judgment, disorientation, loss of social inhibition, delusions, hallucinations and psychosis may occur. In cases of extreme overdose, death can result.
To get over it, you just stop drinking it!! However, depending on the length of time you have been drinking caffeine, you may suffer withdrawal symptoms. Withdrawal symptoms may appear within 12 to 24 hours after discontinuation of caffeine intake, peak at roughly 48 hours, and usually lasts from one to five days. These symptoms can inlcude headache, nausea, fatigue and drowsiness. A reduction in serotonin levels when caffeine use is stopped can cause anxiety, irritability, inability to concentrate and diminished motivation to initiate or to complete daily tasks at home or at work; in extreme cases it may cause mild depression. (all of the above information is from wikipedia and there is more...)
2006-08-14 18:14:46
·
answer #8
·
answered by msfyrebyrd 4
·
0⤊
0⤋